20211099999958 has 32 divisors (see below), whose sum is σ = 34899641683200. Its totient is φ = 8598899503584.

The previous prime is 20211099999917. The next prime is 20211099999967. The reversal of 20211099999958 is 85999999011202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24418053 + ... + 25232191.

It is an arithmetic number, because the mean of its divisors is an integer number (1090613802600).

Almost surely, 2^{20211099999958} is an apocalyptic number.

20211099999958 is a deficient number, since it is larger than the sum of its proper divisors (14688541683242).

20211099999958 is a wasteful number, since it uses less digits than its factorization.

20211099999958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827044.

The product of its (nonzero) digits is 85030560, while the sum is 73.

The spelling of 20211099999958 in words is "twenty trillion, two hundred eleven billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-eight".